Silencer and regulator for automatic flush-valves.



J. B. WILLIAMS.

SILENCER AND REGULATOR FOR AUTOMATIC FLUSH VALVES. APPLICATAON FILED 050.17. 1914.

\VITNESSES: IN VEN'IOR A iiz ams,

Patented Apr. 25, 1916.

lmmun JOHN B. WILLIAMS, OF SAN FRANCISCO, CALIFORNIA, ASSIGNOR, BY MESNE' ASSIGN- MENTS, T PERFECTION VALVE COMPANY, A CORPORATION OFCALIFORNIA.

SILLENGER AND REGULATOR FOR AUTOMATIC FLUSH- VALVES.

Specification of Letters latent.

Patented Apr. as, rain.

Application filed December 17, 1914:. Serial No. 877,664.

To all whom it may concern.

Be it known that T, JOHN B. WILLIAMS, a

' citizen of the United States, residing in the ,is shown in connection with flush valves of the type represented by my former Patents anocases and #1,119,380, issued respectlvely to me on May 27, 1913, and December 1,1914.

An object of the invention is to regulate the flow and velocity of water under high pressure as it enters the bowl, so as to eliminate noise and splash.

A further object is to so control the velocity of the water that it will conserve normal pressu-rein the valve to insure the proper and positive action of the piston even under varying conditons.

A further object is to provide a silencer and regulator which is readily adaptable to various types of valves.

Having reference to the accompanying drawings: Figure 1 is a vertical central section through-the valve. Fig. 2 is a perspective view of the silencer and regulator.

A represents a valve casing having a piston chamber in which operates a piston valve 2, and which chamber may be intermittently brought into communication by said piston with the main inlet and outlet ports 3-4:,

The valve is so constructed that the operation ofthe ports 8-4: may be reversed so that at one time they may be respectively inlet-and outlet ports, as here shown, or at another time their function may be-reversed and port 4 may be the inlet port and port, 3

the outletport. This reversible action is secured by means of a ported head 5 and the following described fluid connections;

Port 4 communicates with a port 6 in the vertical wall of casing A, which in turn connects with a port 7 in the head 5; communication between port 7 and valve chamber 8, above piston 2, being controlled by a valve 9 and push-button 10. Port 3 is in communication with the piston chamber, above piston valve 2, through the port 11 m the wall of the casing A, and port 12 in the head 5, and the reduced throttling port 13 in the dowel nipple 14:. Ports 6 and 11 are diametrically opposite each other in the case and ports 7 and 12 are diametrically opposite each other in the head 5, and the nipple 14 is so constructed and arranged that it will fit into the top of either of the ports t or 11 according to which way the head 5 is turned. Head 5 is maintained in place by suitable means, as a cap 15. Piston valve 2 is normally seated by the water pressure from above its seat formed on the top of a bushing 16 which is in continuation with port 4. This bushing has a cylindrical bore to receive the adjustable hollow stem 17 of piston valve 2. The present invention 1 lies, particularly in the construction and functions of this valve stem 17 and its 00- ordinated parts.

Part 17 comprises a cylindrical shell attached to and movable with the piston 2 and having a sliding fit in bushing 16; shell 17 having ports 18 in its sides, These ports are adjustable. in size by suitable means,

as a hollow nut or shell 19, having aninsupply at 3 water accumulating in chamber 8, above piston 2, will seat and close both valves 9 and 2. When the ports are in this position no water will pass through the apparatus. Pressing down on the push-but-. ton 10 will relieve the pressure in chamber 8, above piston 2, allowing the water to pass out through ports 7 and 6 more rapidly than it can enter chamber 8 through the reduced port 13 and nipple 14:. This will cause an unbalanced pressure on the two sides of the piston valve 2; the lesser pressure being above allowing the piston to move upward and, therefore, opening communication between ports 3 and 4 through the space in the piston chamber 8 below piston valve 2 and through theports 18 as they become uncovered over the lip of bushing 16. The rapidity of the flow of water through ports 18 to outlet 4 and thence to the bowl and.

also the volume of water are dependent on the size of the ports 18; these ports being of suflicient area always to supply sufficient water for flushing purposes even under lowest pressure. If the pressure in the main is high and it is desired to modify the flow through the valve, the inner telescoping shell 19 is moved upwardly on the threaded stem 20, thus reducing the opening in the ports 18 in the outer shell without in any way reducing the initial pressure, but governing only the water leaving the flush valve. If there is a low pressure in the main the adjusting shell 20 is moved downwardly to increase the size of the ports 18.

The invention provides a ready and simple means for not only reducing the pressure but also the volume necessary for proper flushing and doing it in such a way as to make the flushing operation practically noiseless. The period of the flushing operation is equal to the length of time it takes the piston 2 to rise, contact with valve 9 and close port 7 and then for the space in chamber 8 above piston 2 to fill again through the reduced port 13. The closing of the ports 18 over the lip of the bushing 16 is done noiselessly and without any obnoxious wire drawing as is the case with many of the flush valves now in use.

It is manifest that various changes in de- 30 tails of construction maybe made in the present invention without varying the principle thereof.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. In a valve mechanism in combination,

a casing having a piston chamber, a piston shell adjustably mounted on said stem and slidable within said casing.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

JOHN B. WILLIAMS. Witnesses:

J OHN H. HERRING, W. W. HEALEY. 

